/* Copyright (c) 2008 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


package com.google.gdata.data.youtube;

import com.google.gdata.data.AbstractExtension;
import com.google.gdata.data.AttributeGenerator;
import com.google.gdata.data.AttributeHelper;
import com.google.gdata.data.DateTime;
import com.google.gdata.data.ExtensionDescription;
import com.google.gdata.util.ParseException;

/**
 * Object representation of the tag yt:recorded.
 *
 * 
 */
@ExtensionDescription.Default(
    nsAlias = YouTubeNamespace.PREFIX,
    nsUri = YouTubeNamespace.URI,
    localName = "recorded")
public class YtRecorded extends AbstractExtension { 
  private DateTime date;

  public YtRecorded() {
  }

  public YtRecorded(DateTime date) {
    setDate(date);
  }

  /**
   * Sets the date.
   *
   * @param date a {@link DateTime} that contains only a date. See
   *   {@link DateTime#setDateOnly}.
   */
  public void setDate(DateTime date) {
    if (date != null && !date.isDateOnly()) {
      throw new IllegalStateException(
          "Object should be only a date, not a date and a time");
    }
    this.date = date;
  }

  /**
   * Gets the date.
   *
   * @return a date or {@code null}.
   */
  public DateTime getDate() {
    return date;
  }

  @Override
  protected void putAttributes(AttributeGenerator generator) {
    super.putAttributes(generator);
    if (date != null) {
      generator.setContent(date.toString());
    }
  }

  @Override
  protected void consumeAttributes(AttributeHelper helper) 
      throws ParseException {
    super.consumeAttributes(helper);

    try {
      date = DateTime.parseDate(helper.consumeContent(true));
    } catch (NumberFormatException e) {
      throw new ParseException("Invalid date. Expected format: YYYY-MM-DD");
    }
  }
}
